Mutant branch on white widow?

[Hellraiser]

Same thing going on in this thread:

Blue Dream mystery stem

I have a bit of a mystery on my hands. I began some LST in my veg tent. I have 4 clones, 2 ILGM blue dreams, and 2 Aethers from Brother Mendel. All have been in dirt for about 3 weeks, and all look beautiful. However, when I went to bend one of the Blue Dreams, I noticed the stem felt weird. Upon inspection, I observed that the stem is flat. And I mean flat… like it was compressed and flattened between 2 boards. It is over a 1/4 wide, by no more than 1/8 thick. It begins 4 inches above soil…